Abstract: Although under the condition of global operation,the non orthogonal quantum states cannot be copied and deleted perfectly because of the linearity of the quantum operation,the orthogonal states can be copied and deleted perfectly.But when the operation is restricted to the Iocal Operation and Classical Communication（LOCC）,ever the orthogonal quantum states may be not being copied and deleted perfectly.Considers the problem of deleting of bipartite orthogonal maximal entanglement states and deleting of quantum channel,also deriver some necessary and sufficient conditions when they can be deleted.

摘要： 虽然在全局操作（Global）下,由于量子操作线性性的限制,非正交态不可精确克隆和精确删除,但是正交态却可以精确克隆和精确删除。不过在局域操作（LOCC）下,即使是正交的量子态也不一定可以精确克隆和精确删除。考虑在局域操作下,两体最大正交纠缠态和量子信道的局域删除问题,得到了它们可以实现局域删除的充要条件。